Server update, 2019-01-22

More bugs fixed, that’s our wish for 2019! Additionally, this release comes with usual update of URL handlers and a heap of code being rewritten behind the scenes. Thanks to Jaykin for the patch he wrote during GCI. Thanks to culinko, drsaunde, jesus2099, johnlinp, jrv, outsidecontext, silentbird, thomasboehm, zastai for having reported issues. The git tag is v-2019-01-22.